Printing mechanism fob adding



L LAMBER-r 1 mirarme uncmrsu Fori Amma -ucnmns r original misa Apg11,5,-1'945 HARRY L Lmaem His attorneg Dec. 2l, 1948. H. L. LAMBERT y PRINTING IECHANISH FOR ADDING IACINES original Filed April s. 1945 A Sheets-Sheet 2 nnenor HAR RY LLAMBERT His attorney Dec. 21, 1948. H. L LAMBERT PRINTING IECBANISI'FOR 'ADDING CHINESE original P11ed-np11'3, 1945 His Gttorng rniu'nue imcnwisn Fonmmdmicnmss y original' Filed A pru 3, 1945 f 4 sheets-sheet 4 Suunto: HARRY L. LAMBERT Haftung- Patented 21, 1948 PRINTING vHarry L. Lambert,

by meme assignments,

Register Company, Dayton,

of Maryland Original application April 3,

Divided and this application May 10, 1946,Serial No. 668,749

MECBANISM FOR ADDING MACHINES East Rochester, N. Y., asaignor,

to The National Cash Ohio, a corporation 1945, Serial No.

l Claims. '(Cl. IUI-93) to provide a machine for receiving a series of fractional entries and for printing each of these entries on a strip of record material in the order in which they are received.

Another object of the invention is to provide a machine with two rows of type on a single type carrier, a printing hammer for each row, and a selecting mechanism for determining which of the two printing hammers shall be rendered effective during a given operation of the machine.

A further object of the invention is to provide a machine with two rows of type on a single type carrier, a printing hammer for each row, a row ofvkeys for controlling the differential positioning of the type carrier, and a second'row of keys for determining which hammer is to. he rendered effective during a .given operation of the machine.

Still a further object of the invention resides in the provision of a machine having two rows of fractional keys, one row lfor the even-numbered numrrators and one row for the odd-numbered numerators, a type'. carrier .provided with two rows of type, one for the even-numbered numerators and one for the odd-numbered numerators, a printing hammer foreach ro'w, a differential mechanism controlled by the even numerator keys for controlling the position of the type carrier, and a hammer selecting mechanism controlled by the odd numerator keys for determining which of the two hammers is to be released during an operation of the machine.

With these and incidental objects in view, the invention includes certain novel features of construction and combinations of parts, the essential elements of which are set forth in appended claims and a preferred form or embodiment of which is hereinafter described with reference to the drawings which accompany and form 'a partv of this specification.

In the drawings:

Fig. 1 is a sectional view of the machine, taken to the right of a whole number key and showing the actuators for entering amounts into the totalizer, together with the printing mechanism.

. Letters Patent No.

Fig. 2 is a sectional viewshowing the evennumbered. numerator fractional amount bank, together with the fractionalY amount totalizer wheel and the printing mechanism for recording the even-numbered numerators.

, Fig. 3 is a rear view of the fractional amount type carrier. Y

Fig. 4 is a detail view of a control mechanism.

Fig. 5 is a sectional view showing the oddnumbered numerator fractional amount bank, together with the mechanism for selecting one or the other of the mers.

Fig. 6 isa detail view showing the means for connecting the v lodd-numbered and the evennumbered numerator keys together.

Fig. isms for printing Fig. 8 is a diagrammatic view board arrangement of the machine to which the part of the hammer the fractional amounts.

invention is shown applied.

Fig. 9 is a facsimile of a portion of the tape printed by the machine.

Gramm. Dsscnrrrron The invention is shown as applied to an adding machine of the type described'in United States 1,386,021 and No. 1,386,022, both isued to Heber C. Peters on August 2, 1921, and United States Letters Patent No. 1,854,875, issued to Nelson White on April 19, 1932.

' In this class of adding machine, there areprovided a series of amount keys'or stops for con- -trolling the positions taken up by a' series of reclprocating members. Actuated by the latter are the adding racks, which impart movement to the totalizer wheels and the type carriers to position the type in In the machines illustrated in the above-mentioned Peters patents, each reciprocating member comprises a stop bar which indexes against the projecting key stem and is connected at its rear end with an L-shaped pivoted lever, the latter carrying at its upper endl an adding rack and at its rear end a type bar, these associated elements being adapted to move together as a unit. v

In -the machine .illustrated in the above-mentioned White patent, the adding rack is mounted on an independently pivoted lever adjacent to and separate from the aforementioned L-shaped lever, 'so that the rack and the typefbar need not move as a unit. As is well known,

fractional amount printing ham- 7 is a 'front view of the hammer mechanshowing the key- I the proper printing position.

this construc-` that shown in the Peters patent, can bev used therewith. The keyboard in the machine as described in the instant application is provided with amount key banks similar to those disclosed in the above-mentioned White and Peters patents. In addition to the regular amount keys, which are arranged in decimal order, the present application illustrates two banks of fraction keys. 'I'hese two banks of keys are illustrated in the instant machine for adding fractions of one-sixteenth; one bank of keys is provided for entering fractions having odd-numbered numerators, and another bank of keys is provided for entering fractions having even-numbered numerators. The fraction keys are so interconnected on the keyboard that thefdepression of any odd numerator key, exceptfthe "l" key, will also carry with it its adjoining even-numbered numerator key. Theconstruction of the differential mechanism associated with the fraction banks of keys is-suchfthat the index member associated with the odd-numbered numerator keys will move only one step when' a key in this bank has beendepressed, and the index member in the even-numbered numerator bank will move a number of steps equal to the value of the numerator on the key depressed. Thus, for example, if it is desired to enter 1%, the 5" key in the right-hand bank is depressed. This keyi carries with it the 4 key in the second'b'ank. During the operation of themachine, the index member 'in the right-hand bank moves one step to adjust a four-pointed wheel, which actuates a shutter fora purpose to be described later. This onestepmovementof the index member in the righthand'bank also actuates a -iour--pointtransfer element, so that, upon the entry of two successive odd-numbered numerators, one is transferred into the fraction dial wheel. The depression of the 4 key in the evenenumbered numerator bank will cause the index lmember associated with this bank of keys to move two steps; thus advancing the fraction dial wheel two steps. If before this entry operation-'that is, with' the 5 keyvdepresse'd-'fthefraction dial'wheel were standing at zero, then', upon operation of. the machine. the dial wheel will'be moved to'present the numerals@ and 5 to the sight' opening provided in the machine. At.v this'tim, the shutter operated under controlpfthe oddnumerator index member will be positioned so that the numeral 5 is in displaying position and the numeral 4 is concealed, thusindicating 'as havbeen `entered lnto'th' totalizer. Y

The index member ofthe even4 numerator differential positions a typecarrier topresent two numerals to the printingline. A separate printing hammeris provided. to print from either one of the two type characters that are presented to theA printing line, and the diiferentialmechanism in the odd numerator bank sets upa control member to select one ofthe two printing hammers to be released to take an impression'from the proper one of the type carriers. Thus, when an oddnumbered numerator key is depressed and the machine is operated, the printing hammer for the odd-number type characters on the type bei' is released to take an impression. If no odd-numbered numerator key is depressed, then the printing hammer for printing fromv the even-numbered type character will .be released for operation. I

The type characters provided on the type carrier for the fractional amounts show only the numerators with a horizontal linev drawn beneath them. The denominator. 16, is not engraved on the type carrier, since it will be understood by the user of the machine that the characters printed in the first column on the record strip represent the fractions for which the machine is built, which, as illustrated in the present machine, are sixteenths.

Danna-D DxisciuPrroNv Keyboard The keyboard of the machine as illustrated in the present application is provided with six banks of keys 30 for entering amounts into the totalizer in the usual and well-known manner, as shown and described in the above-mentioned patent to White. Just to the right of the units bank of keys 30 is provided a bank of fraction keys 3|, which is used to enter all fractions having even numerators. To the right of the bank ofkeys 3| is provided a bank of keys 32 for entering all fractions having odd numerators. Each of the keys 3| is provided with a plate 33, which is securely fastened to the key stem just beneaththe head of the key and which projects to the right and under the head of the adjoining key 32. The plate 33 is slotted at its right end so as to'pass freely about the stem of the key 32 so that the key 3i and its associated plate `33 may bedepressed without depressing .the key 32. However, upon depression of a key 32, the plate 33 is carried therewith, thus depressing the adjoining key 3|. The plate 33 thus provides a means Whereby, when any one of the odd-numbered numerator keys, except the key representing 1, is depressed, it will carry with it the adjoining evennumbered key having a value one-sixteenth lower than that of the odd-numbered key being depressed. The usual subtract key 34, repeat lever 35, and correction key 36 are provided on the keyboard of the instant machine.` vThe functions and controls of these three control members are exactly like those illustrated in the above-mentioned White and Peters patents, and therefore no further description ofthe members is given herein. The keyboard (Figs. 1, 2, 5, and 8) is provided with a top plate 40 and a bottom plate Il, .suitably supported by side frames 43 (one of which is shown in Fig. l) The top plate I0 is provided with suitable slots through which the keys project and which provide supportingand guiding means for the keys, said keysbeing arranged to slide in said slots substantially at right angles to the top and bottom plates.

Amount bank-Whole number keys The construction of the whole number amount lto maintain the keys in their undepressed positions. Each bank of keys is yalso provided with a detent for maintaining a depressed key in its depressed position to maintain the lower end of the depressed key in the path of a shoulder on the associated index bar 44 (Fig. 1). A comb 45 acts as a guide for the forward end of the index bar 44. vA spring 46, one end of which vis attached to the upwardly-extending flange of the comi: and the other end of which is attached to a stud 41 cn the index bar 44, tends to draw the index 'par forwardly. Secured to the side of the index bar 44 is a plate 48, formed to provide a fork which strazldles the comb 45 to properly guide the index bar in its different movements. The face 48 cf the co2-nb 45 acts as the 9s stop for the index oar when thc shoulder 50 on the index bar cornes into contact with said face 48r during an operation in which the 9 key is depressed.

The rear end of the index bar 44 is pivoted, by means of a stud, to the upper end of a diverging lever 55, pivotally mounted on a shaft 58. A rack lever 51 is also pivoted on thc shaft 56 adjacent the diverging lever 55. The construction of the diver-ging and rack". levers is the same as that shown in the White patent. Each diverging lever 55 includes a forwardly-extending gooseneck arm 58 having at its extremity a slot which is radial with respect to the shaft 56. similar gooseneck extension 58 on the rack lever 51, having a slot 80 in alinement with the slot in the diverging lever, is provided, and. when the machine is conditioned for adding operations, a stud 8| projects through the slots in the gooseneck arms of the diverging lever and the rack lever to couple them together to move as a unit. The stud 6| is mounted on an arm 62 secured to a hub rotatably mounted on a shaft. To this hub 65 is secured the usual complementary arm 64, adapted to cooperate with a stud 88 on the index bar 44 for the purposes of subtracting, as fully shown and described in said White patent.

When the machine is conditioned for subtracting operations, the shaft 63 and the arms 62 and 64v are shifted endwise. in the manner shown in the above-mentioned White patent, to withdraw the stud 6| f rom the slot in the diverging lever to thereby uncouple the diverging lever from the rack lever for the purposes and functions described in said White patent.

Each rack lever 51 carries at its upper end the usual adding rack 10, step piece 1| and carrying spring 12. The rack 10 is provided with two studs 13, which are free to slide in elongated slots in the rack lever 51. Each rack 10 may mesh with a pinion 14, secured to a registering dial or number wheel 15. The number Wheels 15 are all rotatably mounted on a common shaft 16 and are provided with the customary tens transfer control mechanisms. The shaft 16 is `carried on a rocking frame 11 pivoted on a shaft 18, so that the pinion 14 may be rocked into and out of mesh with the rack 10 in the proper timing during the machine operation in a wellknown manner described in the above-mentioned patents. 'y

Two arms (Fig. 1) and 8| (Fig.- 2) are pinned to the shaft 56 at each end thereof and support between them a cross bar 82. The cross bar 82 Anormally engages a fiat surface 83 on the diverging and rack levers. The function of the cross bar 82 is to control the time of movement of the diverging` and rack levers and their associated index bars. During the forward movement of the operating handle 84 (Fig. l), the cross bar 82 is moved out of the path of the diverging and rack levers to release them to the action of the springs 48, and the llevers are re- LSU 6 stored to their normal positions by the return stroke of said handle.

The cross bar 82 is rocked by the operating handle when the latter is first pulled forwardly by a mechanism including a plate 85 (Fig. 2), to which the operating handle 84 is releasably clutched. The plate 84 has pivoted thereto a link 86, which is pivoted at its other end to an arm 81, secured on a shaft 88. shaft 88 is a cam 88, with which a roller 80 on a pitman 8| cooperates. The pitman 8| is pivotally connected to the above-mentioned arm 8| by a stud 82, and the rearward end of the pitman 8| is bifurcated 'to straddle a hub 18 of the arm 81. A spring 83, having one of its ends attached to a stud on the arm 8| and having its other end anchored on the hub 18, normally maintains the roller 80 in contact with the cam 88.

Rocking movement of the handle 84, through the plate 85, the link 88, the arm 81, and the shaft 88, rocks the cam 89 first counter-clockwise (Fig. 2) and then back in a clockwise direction to its normal position. Counter-clockwise movement of the cam 88 causes the roller 80, under tension of the spring 83, to follow the contour of .the cam 88, thus pulling the pitman 8| rearwardly androcking the arms 80 and 8| counterclockwise (Fig. 2). Counter-clockwise movement of the cross bar 82 releases the diverging and rack levers for movement by the spring 46. The levers continue to move until a shoulder 85 (Fig. 1) of the index bar strikes the end of a depressed key. The shoulders 85 are so arranged on the index bar 44 in relation to the keys 30 that the index bar and the rack lever will move an extent commensurate with the value of the depressed key.

After the rack levers are ypositioned under control of the depressed key, the totalizer frame11 is rocked to lower the register pinions into engagement with the racks 10. whereupon the cam 88, acting against the roller 80, cams the pitman 8| and the arms 80 and 8|, together with the cross bar 82, to rock the latter clockwise (Fig. 1) to restore the rack levers to their normal positions. During this return movement of thel rack lever, the amount represented by the depressed key is entered into the registering pinion 14 and is indicated on the registering dials 15 through a sight opening 86 provided in a plate 81 carried by the totalizer frame 11.

The forward end of a plate88, adjacent each totalizer pinion 14 and supported by rods 88 and |08. has an alining tooth |0| formed thereon, with which the totalizer pinion engages when the totalizer is rocked out of engagement with the rack 10 to maintain the pinion and the registering dial in proper alinement while disengaged from the adding rack. The rods 88 and |00 are supported by the sice frames 43.

The usual zero stop pawl |02 (Fig.v l) `is prolvided to arrest the index bar 44 and the rack lever in the zero position when no amount key 30 is depressed. Depression of any key 30 in the amount bank moves the zero'stop pawl out of the path of the end of the index bar 44 to release the index bar to the actionl of the spring 46 in the manner shown and described in the above-mentioned patents. v

Amount bank dz'erential-Fractzon banks Also secured to the The present machine is constructed to enter fractions in steps of one-sixteenth, and two banks of keys are used to enter ali of the fractional amounts. The registering dial Il@ is differentially positioned under control of the keys 3| (Fig. 2) and is divided into eight sections, each section having two numerals, which may be positioned opposite the sight opening in the plate 91. A shutter |31 is provided and assumes one of two positions in order to conceal one of the numerals positioned opposite the sight opening.

Fraction differential mechanism-Even-number numerators The differential mechanism for entering the even number numerators into the registering dial I||l is shown in Fig. 2. Depression of a key 3| (Fig. 2) withdraws the zero stop pawl 2 from the path of the index bar ||3 and moves the end of the depressed key into the path of the appropriate shoulder 4 on the index bar H3. A spring II'I constantly urges the index bar ||3 toward the front of the machine.

The index bar 3 is pivotally connected to a diverging lever ||6, .pivoted on shaft 56. The diverging lever I6 i's provided with a forwardlyextending arm.' having a radial slot in alinement with a radialslot., 259 in a forwardly-extending arm 258 on a rack lever- I i5 pivoted on shaft 55 adjacent tlied-verging lever 6. A stud 36| is carried by an armj362. secured to a hub 365 rtatably mountedh on the shaft 63. This`hub 365 also has secured to it the usual complementary arm 364 to cooperate with a stud 366 on the index bar ||3 for subtract purposes. This stud 36| enters said radial slots and couples the levers and IIB together and is disengaged from the lever 'l I6 during subtracting operations. The rack lever ||5 has slidably mounted, near its top, a 'rack |58, meshing with a pinion |59 on shaft 16.

The pinion |59 is secured to the side of the fraction registering dial I i6,

A spring 251, one end of which is anchored to a flange on a plate |51, secured to the side of the rack |58, normally maintains a flange |56 on the rack |58 in contact with a flange |55 of a transfer trip arm |53 (Fig. 5). When the flange |56 is in contact with the flange |55, the rack |58 is held in its normal position, and, when the flange |55 is withdrawn from the path of the flange |56, the spring 251 moves the rack |58 one step relatively .to the rack lever ||5, for a purpose described later.

Operation of the machine with a key 3| depressed and the consequent counter-clockwise movement of the bar 82 releases the rack lever |I5 and the diverging lever ||6, together with the index bar ||3, to the action of the spring |I'|.

`When the index bar H3 is arrested by the depressed key, the rack lever ||5 is in a position corresponding to the value of the depressed key. In this instance, each key progressively represents two sixteenths, and therefore, even though the registering dial 0 moves only one step when actuated by the rack lever I5, the amount represented will be increased by two sixteenths for each unit of movement of the index bar ||3, as represented by the various keys 3|.

In al1 other respects, the construction and operation of the differential mechanism controlled by the keys 3| are the same as described above for the differential mechanism operated under control of the keys 30.

Fractional differential mechanlsm-Odd-number numerators The differential mechanism associated with the keys 32 (Fig. 5) differs from the above-described differential mechanisms in that the depressed keys do not arrest the movement of an index bar associated therewith. The index bar |20 is provided with a stud |2|, which projects to its right, and, when the index bar is released by depression of any key 32 and the consequent removal of a zero stop member |22, the stud |2| engages the face 49 of 'the comb 45. The extent of movement given to the index bar |20 when moving from the position shown in Fig. 5 to the position in which the stud 2| engages the face 49 is equal to one step of movement, or, that is to say, an extent sufficient to rotate a registering pinion |23 (Fig. 5) one-eighth of va rotation. Thus it is clear that, no matter which key 32 is depressed, the registeringpinion |23 will rotate only one-eighth of a rotation. This step of rotan tion is transmitted from the index bar |20 to the registering pinion |23 by means including the rack lever |21, which lever is pivoted on the shaft 56 adjacent to a diverging lever |24. The index bar |20 is pivoted to the diverging lever |24, which is provided with a radial slot into which a stud 26| on an arm 262 projects. This arm 262 `is secured to a hub 265, rotatably mounted on the shaft 63, and has secured to it a complementary arm 264 to cooperate with a stud 266 on the index bar |20 for subtract purposes in the usual manner. The stud 26| also projects into a radial slot in an arm |26 of the rack lever |21 to couple the levers together. The rack lever |21 Vcarries an actuating rack |28 similar in all respects to the actuating rack 16 described in connection with the differential mechanism in Fig. 1. The index bar |20 is actuated by a spring |29, when released by the bar 82, and, when moved until the stud |2| is arrested by the face 49 of the comb 45, carries the levers |24 .and |21, together with the rack |28, forwardly. During this time, the pinion |23 is disengaged from the rack |28, and, after the rack is positioned, the pinion I 23 is again moved into engagement with the rack i 28. Thereafter, the bar 82 returns the levers |24 and |21 to their normal positions, and,

in so moving, the rack |28 rotates the pinion |23 one-eighth of a revolution.

'I'he registering pinion |23, instead of being secured to a registering dial like the dial 15 (Fig. 1), is secured to a four-point disc |35 (Fig. 5). The four-point disc |35 is arranged to actuate, or position, the shutter |31 in a manner not shown herein but completely shown and described in my co-pending application Serial No. 586,361, filed April 3, 1945. For each operation of the disc |35, the flash moves from one position to the other to expose alternate numerals on the dial 0. Hence; the positioning of the shutter |31 is such that, when the amount standing on the dial ||0 is an odd number, the odd-number numeral will be exposed, and, when the amount standing on the dial ||6 is an even number, the even-number numeral will be exposed through the sight opening.

'I'he mechanism for advancing the registering dial |I0 one step for every two steps of movement of the disc includes a four-point camming member (Fig. 5). Each point on this camming member acts to trip a mechanism similar to the usual tenstransfer mechanism commonly used. The` four points on the cam member |50 are so arranged that.Y when it becomes necessary to advance the dial by reason of advancing the pinion |23 two steps, one of the camming points engages a flange |52 on the transfer arm |53 to rock it on a pivot |54. Such rocking of the arm |53 lowers the i'lange |55 out of the path of the shoulder |56 of the plate |51, mounted on the actuator rack |58 in the difierentlai mechanism shown in Fig. 2. The actuator rack |58 meshes with the pinion |59 of the registering dial ||0. Lowering of the flange |55 into the path of the shoulder |56 results in the actuator rack |58 moving one step in the adding direction to advance the dial ||0 one step.

Printing mechanism Mechanism is provided for entering the various items cn a record strip as they are entered into the totalizer. As far as the printing mechanism' tion banks of keys 3| and 32. Described in general terms, the mechanism consists of a type basket having two sets of printing characters, which is adjusted under control of the evennumber numerator key bank 3|. A control is provided for selectively tripping a hammer to print from the proper one of the two sets of type carriers. If no odd-numbered numerator key 32 is depressed, the even-number character will print, whereas, if an odd-numbered numerator key is depressed, the odd-number hammer will be tripped. The control of the selection of a printing hammer is effected by the movement or non-movement of the index bar |20 (Fig. 5) in the odd numerator key bank 32.

Printing whole number digits The whole number digits are represented by type carriers |60| (Fig. 1) carried in a basket mounted on the upper end of a type slide |6|| connected to an arm |52 on the diverging lever 51 by a link |63. Differential movement of the index bar 44 under control of a depressed key 30 positions the arm |62 and the bar |6| I to present a type character commensurate with the value of the depressed key at the printing line opposite the platen |64. The record material |65 is fed from the roll |66 around a guide rod |61 and under the platen |64, and thence past the printing line and out of the machine.

A printing hammer |68 is provided to strike the selected type carrier to impinge the type against a ribbon (not shown), the record material, and the platen to make a printed record.

The hammer |68 is held in cocked position by a hook |59 formed thereon, which is engaged by a pawl |10 pivotally mounted-on a shaft |1|. A spring |12 normally maintains the pawl |10 in position to' latch the printing hammer |68 in' its cocked position. A rod |13 acts to hold the trip pawls |10 on the shaft |1|, and a rod |14 limits the counter-clockwise movement of the pawl |10 under action of the spring |12. A stud |15 on the slide |6|| normally limits counter-clockwise rotation of a tripping arm |16 mounted on a shaft |11 under action of a spring |18. The arm |16 is rocked bodily around the shaft |19 during a machine operation, to engage itsend with a shoulder |80 on the trip pawl |10 to rock the trip pawl clockwise to release the printing hammer. When the type slide |6|| is in the home position, the

der |80, then, on bodily'movement of the arm,

the pawl |10 is rocked on the shaft |1| to withdraw the hooked end from the hook |69 on the printing hammer, which is thereupon released to the action of the spring |8|. The spring |8| thereupon swings 'the hammer |68 rapidly clockwise to strike the type carrier located' at the printing lline.

The arm |19 is rocked bodily around the shaft |19 by a pair of arms |82 (Fig. l) and |83 (Fig. 4). Each of the arms |82 and |83 is provided with a stud |85. When the operating handle 84 is pulled forward and the shaft '88`is rocked counter-clockwise, as described above, the arms |82 and |83 move 4the studs |85 -int'o contact with shoulders |88 on a pair `of arms |81 mounted on the shaft |19. Mounted between the arms |81 is the shaft |11, on which the arms|16 are supported.

Therefore, upon operation of the machine and rocking of the shaft 88 counter-clockwise, the pair of arms |81 carrying the shaft |11 and the arm |18 move forwardly of the machine, and,

when the arm |15 is in contact with the shoulder |80. the arm trips the printing hammerv |68 by rocking the pawl |10 clockwise until its hooked end is withdrawn from'the hook |69 of the hammer.

The stud |15 is so located on the type slide |6| that the arm |18 is not in position to release the pawl '|10 when the 4type carrier is in either zero position or home position, and therefore zeros are normally not printed. 4The usual and well-known offset flanges |88 are provided on the pawls |10, which extend behind the next higher order pawls |10. so that zeros may be printed in lower denominational orders whenever the pawl |10 of a higher order denomination is released and no keys are depressed in said lower order denominations.

A rod |90, carried between two arms |9| secured to the shaft |I9 (see also Fig. 4) is provided for restoring the tripped printing hammers |58 near the end of the machine operation. The right-hand arm '|9|. when the machine is viewed from the front, is'provided with a depending arm |92l connected to a link |93 connected to the arm |83 on the shaft 88. At the beginning of the machine operation, when the shaft 88 is rocked counter-clockwise (Fig. 4), the arm |83, through the link |93, the arm |92, and the pair of arms |9|, moves the rod |90 clockwise away from the printing hammers. This permits the operation of the printing hammers in the manner described above. Near the end of the machine operation. when the arm |88 is restored to its initial position, the rod is restored to the position shown, by the link |93, the arm |92, and the pair oi.' arms |9|. During this restoring movement, the rod |98 picksnup all of the tripped hammers and restores them to their home or initial positions, wherein they are again latched by the pawls |10.

, Printing'fractions The type basket, differentially positioned under control of the keys 3|, isprovided with two sets of type carriers, as shown in Fig. 3. These type carriers are positioned under control of the dev ing hammers are provided, each operated-1ndependently of the other for printing from one .or the other of the two type characters. When an even-number fraction key 3| alone is depressed. the printing hammer |98 (Fig. 2) is released to print from the type carrier containing the chari2 type carrier set by the even-number keys 3|, onto the record material.

In those operations of the machine in which the hammer v|99 is released, it is necessary to prevent release of the hammer |98, s-o that printing` of the even-number numerator is prevented when-the odd-number numerator is printed.

7 Such preventing means consists of a plate 2|8 .secured 'to the side of` the bar 201.

The plate 2| 8 is provided with a stud 2|9 (see also Fig. 2),

' which projects under the finger 20|, and therefore, when the bar 201 is raised out of its normal position, the finger 20| is also raised from behind acter representing the'depress'ed key. However,

if an odd-number numerator key 32 is depressed, as described above, which also depresses the adjoining even-number numerator key 3|, vthe type carriers will be positioned Justv as before, under control of the even-.number key 3|. However,

depression of a key 32 effects a control' over the release of the printing hammers so that the harnthe shoulder 202 if said finger has been lowered vinto the path of said shoulder 202 by the raising of the stud 2|5.

From the above it becomes clearthat only a vsingle type basket is set, but the two banks of keys 3| and 32 control not only from which type the character is to be printed but also which type hammer is to be released to cause the proper .printing The control is such that the keys 3| mer |90 will not be released to -print, and a hammer |99 (Fig. 5) will bereleased to Itake an impression from the left-hand type carriers, as viewed in Fig. 3, which are setl at the printing line.

The release 'of the hammer |90 will' be described first. This hammer is "released in the same manner as the hammer |60, described above. `The type slide |90 isl provided with a stud 2|5, normally maintaining a linger 20| in ineffective position.- Adjustment of 'I the typeI slide |90, under control of a key 3|, withdraws the stud 2|5 from contact withthe finger 20| and permits the spring 200 to rock the finger 20| counter-clockwise. Such movement positions the end of the finger 20| behind a shoulder 202 on a pawl 203, normally engaging a vhook 209 on the hammer |99. After the nger 20| is positioned behind the shoulder 202, the shaft |11 is rocked around the shaft |19 as a pivot point, thus causing the nger 20| to rock the pawl 203 to release it from the hook 204 of the impression hammer- |98, and causing the spring 205 to swing the hammer |98 clockwise to strike the type carrier carrying the even-number numerator character to take an impression on the record strip. The hammer |99 for taking impressions from the oddnumber type characters 'is released as follows. As explained above, the index bar |20 is released under control of the keys 32 but moves only one step under control of the stud |2| thereon. The index bar |20 thereby moves the diverglng lever |20 one step clockwise when a key 32 in the oddnumber numerator bank is depressed, before the operation of the machine. The diverging lever |20 has an arm 205 connected to a bar 201 by a link 208.

The bar 201 does not have type carriers mounted at its top, like the similar bars |6|| and |90, described above. However, this bar 201 is provided with a stud 2|4 for controlling a finger 209 to move behind a shoulder 2|0 on a pawl 2| normally latching behind a hook 2|2 on the printing hammer |99. The hammer |99 is alined with the odd-numbered type characters in the basket shown in Figs. 2 and 3.

From this it is apparent that, in any machine operation in which the diverging lever |24 is moved one step, the printing hammer |99 will be released for operation to cause the hammer |59 to be released. to print, from the odd-number set the type carriers and normally release the printing hammer for printing the even-number numerator characters. However, when an oddnumber numerator key 32 is depressed, this-control is modified by the stud 2|9 raising the trip finger 20| from behind the shoulder 202, so that the hammer |98 is not released for operation, and. at the same time, the stud 2 i4 positions the finger 209'behind the shoulder 2|0, so that the hammer |99 is` released for operation and the odd-number numerator character is printed.

Total-taking operations In the present machine, totals are taken in the same manner as in the previously mentioned patent to Peters; i. e., the -totalizer wheels are moved into engagement with the actuator racks at the beginning of the machine operati-on and rotated in a reverse direction until the tenstransfer cams secured to the totalizer wheels strike against the tens-transfer pawls and stop the movement of the racks and type bars. The

' printing hammers are then red to print the total on the record material, after which the actuator racks and type bars are returned to their home positions, with the totalizer wheels either engaged with or disengaged from the racks, depending on whether a total or a sub-total is desired. Thus, in the present machine, the tens-transfer cam |03, secured to the pinion 19 and dial 15 (Fig. 1) for the whole number of units order, is rotated in a reverse or clockwise direction until a shoulder on the cam comes into contactv with a flange (similar to flange |52) on a ten-transfer pawl or arm |04. The wheel is now in its zero position, and the amount standing thereon prior to its return to this position will be set up on the type slide |6| The eight-tooth pinion |59 and the dial ||0I for the even numerator order (Fig. 2) will be returned to zero in a similar manner, the pinion and the dial being arrested in their zero position when a tens-transfer cam |05, secured thereto, strikes against a flange (similar to flange |52) on a tens transfer arm |06. The type slide |96 will now be positioned with one of its eight sets of type situated at the printing line ready to be driven by either hammer |98 or |99 against the platen |64. Which of the two hammers will be released for operation will depend on the setting of the cam member |50 prior to total taking. Ii the cam member is in its zero or even position, as shown in Fig. 5, with the shoulder |49 of one 13 of the points IBI' located behind the ange |52 on the arm |53, when the odd numerator pinion |23.wili beheld against movementduring total taking, and the slidel bar 201 will likewise be prevented from moving upward. The iinger 239 will thus be held in the position shown in Fig. 5, andthe hammer |89 will Vnot be released. The even numerator hammer |98' leased, however, since the tlnger 20| will be lowered into engagement with the ,shoulder 202 and the pawl, 203 by reason of the' upward movement of the slide |98. If-the cam member |50 isin its odd 'position when a total is taken, the pinion |23 will move one step before the, shoulder |0001 one of thepoints strikes against the back faceof the ilange |52.

This will allow 4.the slide 201 to move up one step and cause the nger 209 to move behind the shoulder'2l0 on th'epawl 2|| so as to iire the hammer the hammer |98 is disabled by the stud-2 9,'which holds the nger l| out of shoulder 202 on the pawl 202.

In this manner, the properjiractional amount will be printed.y on the record material, along with a whole number total, as shown by the facsimile of the record tape in Fig.-4 9.

lWhile the: form of mechanism sho'wuand described herein is admirably adapted to fulfill the objects-'primarily stated. it is to'be understood that-itlsinetfintended to confine the' invention v to the one' forniorxembodiment disclosed herein,

for it is susceptible of embodiment in various forms ail comingwithin thescope oi the claims which follow.

What is claimed is:

1. In a machine 'of the class described, the combination of a dinerentially supporting means; two groups of type carriers mounted on the supporting means; two printing hammers, one hammer, being normally effective and `lo'cat'ed in relation n to the groups of type carriers whereby'the hammer strikes a type carrier of one group for .making a record, the other hammer being normally ineffective and located in relation tothe groups of type carriers whereby the hammer strikes a type carrier of the other group for making a record; a bank of keys for controlling the-` adjustment of the supporting means to position a' type carrier of each group at the printing line; a second bank of keys; and means rendered effective whenone of the keys of said -second bank is depressed for causing said one hammer to be rendered ineffective and said other hammer to be rendered Veilective so as to cause a record to be made from said other group of type carriers rather than from said one group of type carriers.

2. In a machine of the class described, the combination of a differentially positionable type supporting means, a group of type carriers on the supporting means representing even-number numerators of fractions, a group of type carriers lon the supporting means representing odd-number numerators of fractions, a bank of even-number numerator keys, a differential means controlled by the even-number numerator keys to adjust the supporting means to position an evennumber numerator type carrier and an oddnumber type carrier at a printing position, a normally cocked hammer, main operating means, means operated by the main operating meansI to trip the cocked hammer to print by the evennumber numerator type carrier, a bank of odd.

number numerator keys. a control bar, a differential means controlled las. At the same time positionable type by the odd-number` (Fig. 2)4 will be. re-

. .ineffective means to trip nur nerator keys to adjust the control b ar from a normal position-.into a moved position, means on the control bar `to render said tripping means ineffective, a second cocked hammer, a normally the second cocked hammer to print by the odd-number type carrier.

'means on the control bar to render the secondnamed tripping means effective when moved into moved position, and means operated by the main operating means to operate the second-named tripping means to release the second-named hammer to print from said odd-number numerator when the even-number numerator or hammer tripping means is ineffective.

3. In a machine oi the class described capable v of beingl given cycles of operation and having a engagement with the andrecord material supported on the the combination of a differentially posiplaten platen,

tionable type carrierpa plurality of groups of type x arranged on said carrier;

a printing hammer associated with. each groupzoftype and adapted to cooperate therewith for making an impression onsaid record material; means for moving said carrier relative vto the platen; means for controlling the movement of said'carrier lso as to cause a type of each group printing position and also fordetermining which one of saidv vhammers tionabie type carrier; two groups of type arranged on said carrier; a normally effective printing hammer associated with the types of one group and a normally ineffective printing hammer associated with the types of theother group, said hammers being adapted to cooperate with the types o f their respective groups for making an impressionon said record material; means for moving said carrier relative to the platen; means, including a bank of depressible keys, for controlling the movement of said carrier so as to cause a type of each group to be moved into printing position; a second bank of depressible key-s; and means controlled by said second bank of keys for rendering said normally effective hammer ineffective and said normally ineffective hammer effective during a given cycle of operation of the machine to thereby enable a printing impression to be made from the type associated .with the latter hammer. f

5. In a machine of the class described capable of being given cycles of operation and having a platen and record material supported thereon,I the combination of a diilerentially positionable type carrier; two groups of type mounted on said carrier; a releasable printing hammer associated with each group of type and adapted to cooperate therewith for making an impression on the record material; means for moving said carrier relative to said platen; manipulative means for controlling said moving means to cause a type of each group to be moved into printing position; separate means for releasing each of said hammers during a machine cycle, one of said means being normally eiective to release one of said hammers and the other of said means being normally ineective to release the other of said hammers; and additional manipulative means for controlling said separate releasing means to cause to be moved intov is to be rendered effective f during a given cycle of operation of the machine I of being given cycles of platen and record material supported thereon.'

' a normal position;

said one releasing means to be renderedinefecf tive and said other releasing means to be rendered eii'ective.

6. In a machine of the class described capable 1 operation and having a the combination of a movable type carrier having a normal position; a group of even-numbered type on said carrier; a group of odd-numbered type on said carrier; a normally cocked printing hammer associated with each group of type and adapted to cooperate therewith for making an impression on the record material; means for moving said even-numbered keys for controlling said moving means to cause a type of each group to be moved into printing position; a normally ineilective tripping member associated with each of said hammers for tripping the hammers at a predeiermined time during the machine cycle; means for rendering the tripping member associated with the hammer for the even-numbered type eil'ective whenever said type carrier is moved out of its normal position; a control bar movable from a normal position to a shifted position; a bank of odd-numbered keys; means controlled by said 1 odd-numbered keys for moving said bar from its 'normal position to its shifted position; and means on said control bar for '@member associated with the hammer for the oddand the tripping member f associated with the hammer for the even-num- .i -bered type ineective to release their associated rendering the tripping numbered type eiiective oi' being given cycles of operation and having a platen 4and record material supportedthereon,

the combination of a movable type carrier having a plurality of pairs oi 'type on 40 said'carrier each consisting of an evennumbered type and an odd-numbered type; apair of nor mally'cocked hammers, one oi said hammers being adapted to cooperate with the Veven-numbered type carrier relative to said platen; a bank of v hammers whenever-said control bar is moved vfrom its normal position toits shifted position.

7. .In a machine of the class'described capable a normal position to a shifted position; means controlled by the-odd-numbered keys for moving said Abar from its normal position to its shifted position: means on said bar for rendering the releasing means for hammer cooperating with the odd-numbered'type eiective and the releasing means for the hammer cooperating with -the even-numbered type ineil'ective when said .bar is moved to its shifted position; and connections between the even-numbered key and the odd-numbered key oi' each pair for causing the even-numbered key to be depressed whenever the odd-numbered key is depressed to thereby cause theproper pairof type to be'moved into printing position and the. hammer cooperating with the odd-numbered type lto be released.

l HARRY L. LAMBERT.

REFERENCES crrEn The renewing references are of record in the ille of this patent:

-UNrrm STATES PATENTS Date Number Namev 1,323,381 Bchupper Dec. 2, 1919 1,359,173 Horton s- Nov. 16, 1920 1,395,121' Landsiedel Oct. 25, 1921 1,701,307 Racz Feb. 5, 1929 1,730,147 .Horton- .;y Oct. 1, 1929 1,85&,875 White Apr. 19, 1932 Arnold Dec. 19, 1939 Certileate --oi' Correction Patent N o. 2,457,050.

HARRY L. LAMBERT that errors appear in the printed speciication of the above Itis hereby certified December 21, 1948.

numbered patent requiring correction as follows:

Column 13, line 4 0, claim 1,

and that the said Letters after the Word hammer column 14, line 13, strike out or;

strike out the comma same may conform to the record of the'case in theA Patent Oiice.

-Signed and sealed this 12th day of April, A. D. 1949.

Patent should beread with these correctionstherein that the THOMAS F. MURPHY,

d hammers being adapted 

